Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/remote/transport/ServerSessionHandler.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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1 package org.dancres.blitz.remote.transport;
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2
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3 import java.rmi.RemoteException;
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4
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5 import org.dancres.blitz.SpaceImpl;
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6 import org.dancres.blitz.remote.transport.task.ReadTask;
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7 import org.dancres.blitz.remote.transport.task.TakeTask;
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8 import org.dancres.blitz.remote.transport.task.WriteTask;
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9 import edu.emory.mathcs.backport.java.util.concurrent.Executor;
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10 import edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor;
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11 import edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue;
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12 import edu.emory.mathcs.backport.java.util.concurrent.TimeUnit;
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13 import org.apache.mina.common.IdleStatus;
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14 import org.apache.mina.common.IoHandlerAdapter;
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15 import org.apache.mina.common.IoSession;
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16 import org.apache.mina.util.SessionLog;
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17
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18 /**
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19 */
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20 public class ServerSessionHandler extends IoHandlerAdapter {
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21 private static final boolean STRAIGHT_THROUGH = true;
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22
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23 private Executor _executor =
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24 new ThreadPoolExecutor(1, 16, 60, TimeUnit.SECONDS,
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25 new LinkedBlockingQueue());
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26
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27 private SpaceImpl _space;
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28
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29 ServerSessionHandler(SpaceImpl aSpace) {
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30 _space = aSpace;
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31 }
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32
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33 public void sessionOpened(IoSession session) {
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34 // set idle time to 60 seconds
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35 session.setIdleTime(IdleStatus.BOTH_IDLE, 60);
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36 }
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37
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38 public void messageReceived(IoSession session, Object message) {
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39 Message myMessage = (Message) message;
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40
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41 int myConversationId = myMessage.getConversationId();
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42
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43 // System.err.println("Received request with: " + myConversationId);
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44
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45 try {
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46 Object myRequest = MarshallUtil.unmarshall(myMessage);
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47
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48 // System.err.println("Request type: " + myRequest.getClass());
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49
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50 if (STRAIGHT_THROUGH) {
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51 if (myRequest instanceof Write) {
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52 new WriteTask(myConversationId, _space,
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53 (Write) myRequest, session).run();
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54 } else if (myRequest instanceof Take) {
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55 new TakeTask(myConversationId, _space,
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56 (Take) myRequest, session).run();
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57 } else if (myRequest instanceof Read) {
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58 new ReadTask(myConversationId, _space,
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59 (Read) myRequest, session).run();
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60 } else if (myRequest instanceof Ping) {
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61 // System.err.println("ping");
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62 }
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63 } else {
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64 if (myRequest instanceof Write) {
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65 _executor.execute(
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66 new WriteTask(myConversationId, _space,
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67 (Write) myRequest, session));
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68 } else if (myRequest instanceof Take) {
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69 _executor.execute(
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70 new TakeTask(myConversationId, _space,
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71 (Take) myRequest, session));
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72 } else if (myRequest instanceof Read) {
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73 _executor.execute(
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74 new ReadTask(myConversationId, _space,
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75 (Read) myRequest, session));
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76 } else if (myRequest instanceof Ping) {
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77 // System.err.println("ping");
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78 }
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79 }
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80
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81 } catch (RemoteException anRE) {
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82 try {
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83 Message myResponse =
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84 MarshallUtil.marshall(
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85 new RemoteException("Server problem", anRE),
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86 myConversationId);
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87 session.write(myResponse);
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88 } catch (RemoteException anREE) {
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89 System.err.println("Couldn't post error response to client");
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90 anREE.printStackTrace(System.err);
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91 }
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92 }
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93 }
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94
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95 public void sessionIdle(IoSession session, IdleStatus status) {
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96 SessionLog.info(session, "Disconnecting the idle.");
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97 // disconnect an idle client
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98 session.close();
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99 }
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100
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101 public void exceptionCaught(IoSession session, Throwable cause) {
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102 // close the connection on exceptional situation
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103 session.close();
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104 }
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105 }